Forgive my ignorance, but I am not fully aware of how the triangle offense works. When it was explained to me, I got the understanding that it promoted off the ball movement and passing.

But over the past few games, I've noticed very little movement and not a whole lot of passing going on. What am I missing here?

Perhaps you are not familiar with a player named Kobe Bryant. He is notorius for stepping out of the offense.

In all seriousness, they have clearly incorporated some pick/roll with Kobe & Gasol. Also, watch for Odom coming down the lane after the pick/roll occurs (Kobe/Gasol pick-roll, ball goes to Gasol, defensive help comes over, Odom slashes down the middle, Gasol gets assist)